Authors: Michelle Boyd; Toby J Lasserson; Michael C McKean; Peter G Gibson; Francine M Ducharme; Michelle Haby Journal: Cochrane Database Syst Rev Date: 2009-04-15
Authors: Wade T A Watson; Cathy Gillespie; Nicola Thomas; Shauna E Filuk; Judy McColm; Michelle P Piwniuk; Allan B Becker Journal: CMAJ Date: 2009-08-17 Impact factor: 8.262